diff options
Diffstat (limited to 'src/libdraw/ml-draw.c')
| -rw-r--r-- | src/libdraw/ml-draw.c | 192 |
1 files changed, 0 insertions, 192 deletions
diff --git a/src/libdraw/ml-draw.c b/src/libdraw/ml-draw.c deleted file mode 100644 index c352a0b2..00000000 --- a/src/libdraw/ml-draw.c +++ /dev/null @@ -1,192 +0,0 @@ -#include <u.h> -#include <libc.h> -#include <draw.h> -#include <memdraw.h> -#include <memlayer.h> - -struct Draw -{ - Point deltas; - Point deltam; - Memlayer *dstlayer; - Memimage *src; - Memimage *mask; - int op; -}; - -static -void -ldrawop(Memimage *dst, Rectangle screenr, Rectangle clipr, void *etc, int insave) -{ - struct Draw *d; - Point p0, p1; - Rectangle oclipr, srcr, r, mr; - int ok; - - d = etc; - if(insave && d->dstlayer->save==nil) - return; - - p0 = addpt(screenr.min, d->deltas); - p1 = addpt(screenr.min, d->deltam); - - if(insave){ - r = rectsubpt(screenr, d->dstlayer->delta); - clipr = rectsubpt(clipr, d->dstlayer->delta); - }else - r = screenr; - - /* now in logical coordinates */ - - /* clipr may have narrowed what we should draw on, so clip if necessary */ - if(!rectinrect(r, clipr)){ - oclipr = dst->clipr; - dst->clipr = clipr; - ok = drawclip(dst, &r, d->src, &p0, d->mask, &p1, &srcr, &mr); - dst->clipr = oclipr; - if(!ok) - return; - } - memdraw(dst, r, d->src, p0, d->mask, p1, d->op); -} - -void -memdraw(Memimage *dst, Rectangle r, Memimage *src, Point p0, Memimage *mask, Point p1, int op) -{ - struct Draw d; - Rectangle srcr, tr, mr; - Memlayer *dl, *sl; - - if(drawdebug) - iprint("memdraw %p %R %p %P %p %P\n", dst, r, src, p0, mask, p1); - - if(mask == nil) - mask = memopaque; - - if(mask->layer){ -if(drawdebug) iprint("mask->layer != nil\n"); - return; /* too hard, at least for now */ - } - - Top: - if(dst->layer==nil && src->layer==nil){ - memimagedraw(dst, r, src, p0, mask, p1, op); - return; - } - - if(drawclip(dst, &r, src, &p0, mask, &p1, &srcr, &mr) == 0){ -if(drawdebug) iprint("drawclip dstcr %R srccr %R maskcr %R\n", dst->clipr, src->clipr, mask->clipr); - return; - } - - /* - * Convert to screen coordinates. - */ - dl = dst->layer; - if(dl != nil){ - r.min.x += dl->delta.x; - r.min.y += dl->delta.y; - r.max.x += dl->delta.x; - r.max.y += dl->delta.y; - } - Clearlayer: - if(dl!=nil && dl->clear){ - if(src == dst){ - p0.x += dl->delta.x; - p0.y += dl->delta.y; - src = dl->screen->image; - } - dst = dl->screen->image; - goto Top; - } - - sl = src->layer; - if(sl != nil){ - p0.x += sl->delta.x; - p0.y += sl->delta.y; - srcr.min.x += sl->delta.x; - srcr.min.y += sl->delta.y; - srcr.max.x += sl->delta.x; - srcr.max.y += sl->delta.y; - } - - /* - * Now everything is in screen coordinates. - * mask is an image. dst and src are images or obscured layers. - */ - - /* - * if dst and src are the same layer, just draw in save area and expose. - */ - if(dl!=nil && dst==src){ - if(dl->save == nil) - return; /* refresh function makes this case unworkable */ - if(rectXrect(r, srcr)){ - tr = r; - if(srcr.min.x < tr.min.x){ - p1.x += tr.min.x - srcr.min.x; - tr.min.x = srcr.min.x; - } - if(srcr.min.y < tr.min.y){ - p1.y += tr.min.x - srcr.min.x; - tr.min.y = srcr.min.y; - } - if(srcr.max.x > tr.max.x) - tr.max.x = srcr.max.x; - if(srcr.max.y > tr.max.y) - tr.max.y = srcr.max.y; - memlhide(dst, tr); - }else{ - memlhide(dst, r); - memlhide(dst, srcr); - } - memdraw(dl->save, rectsubpt(r, dl->delta), dl->save, - subpt(srcr.min, src->layer->delta), mask, p1, op); - memlexpose(dst, r); - return; - } - - if(sl){ - if(sl->clear){ - src = sl->screen->image; - if(dl != nil){ - r.min.x -= dl->delta.x; - r.min.y -= dl->delta.y; - r.max.x -= dl->delta.x; - r.max.y -= dl->delta.y; - } - goto Top; - } - /* relatively rare case; use save area */ - if(sl->save == nil) - return; /* refresh function makes this case unworkable */ - memlhide(src, srcr); - /* convert back to logical coordinates */ - p0.x -= sl->delta.x; - p0.y -= sl->delta.y; - srcr.min.x -= sl->delta.x; - srcr.min.y -= sl->delta.y; - srcr.max.x -= sl->delta.x; - srcr.max.y -= sl->delta.y; - src = src->layer->save; - } - - /* - * src is now an image. dst may be an image or a clear layer - */ - if(dst->layer==nil) - goto Top; - if(dst->layer->clear) - goto Clearlayer; - - /* - * dst is an obscured layer - */ - d.deltas = subpt(p0, r.min); - d.deltam = subpt(p1, r.min); - d.dstlayer = dl; - d.src = src; - d.op = op; - d.mask = mask; - _memlayerop(ldrawop, dst, r, r, &d); -} |